Mindray uMEC10, Operator'S Manual

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8.6 About ST Monitoring
„
ST segment analysis calculates ST segment elevations and depressions for individual
leads and then displays them as numerics in the ST1 and ST2 areas.
„
A positive value indicates ST segment elevation; a negative value indicates ST segment
depression.
„
Measurement unit of the ST segment: mV or mm. You can set the unit in the [
Unit
Setup ] menu from the [ User Maintenance ] menu.
„
Measurement range of the ST segment: -2.0 mV to +2.0 mV.
WARNING
z
The ST algorithm has been tested for accuracy of the ST segment data. The
significance of the ST segment changes need to be determined by a clinician.
8.6.1 Switching ST On and Off
To switch ST monitoring on or off:
1. In the [ ECG Setup ] menu, select [ ST Analysis >> ].
2. Select [ ST Analysis ] to toggle between [ On ] and [ Off ].
Reliable ST monitoring can hardly be ensured if:
„
You are unable to get a lead that is not noisy.
„
Arrhythmias such as atrial fib/flutter cause irregular baseline.
„
The patient is continuously ventricularly paced.
„
The patient has left bundle branch block.
In these cases, you may consider switching ST monitoring off.
8.6.2 Changing ST Filter Settings
ST-segment analysis can be carried out only when the filter mode is set to [ Diagnostic ] or
[ ST ]. When ST-segment analysis is switched on, [ Filter ] will automatically switch to [ ST ] if
it is not [ Diagnostic ] or [ ST ]. When ST-segment analysis is switched off, the filter mode
automatically switches to previous manual setting.
However, if you switch [
Filter
] to [
Monitor
] or [
Surgery
], ST-segment analysis will turn off
automatically. In case that you change [ Monitor ] or [ Surgery ] to [ Diagnostic ] or [ ST ],
ST-segment analysis keeps off, you can turn it on manually.